How many autoflowering plants can 1 fit under a 600 watt hps?

How many autoflowering plants can 1 fit under a 600 watt hps? and any idea on what I should expect to yield. Im doing DWC 16/8 light cycle...advanced nutrients...and the strain Im leading towards is diesel ryder or automatic ak47.
Also if anyone knows a better autoflowering plant Im mainly interested in potency and bag appeal.
Thanks